5. Maybe we can try shopping online.
也许我们可以试着在网上购物。
还能这样说：
Perhaps we can try to buy things online.
We might try to do shopping through the internet.
6. I tried to buy a new cell phone online, but I didn't know how to pay for it.
我想在网上买一部新手机，但我不知道怎么付钱。
还能这样说：
I tried to buy a new cell phone online, but I was not sure how I can pay for it.
I don't know how to pay for the new cell phone I bought online.
应用解析：
pay for的意思还有：因……受罚，为……付出代价。
例如：You will pay for it if you don't work hard.
如果你现在不好好学习，就得为此付出代价。
7. Does shopping online have the same procedures as shopping in the supermarket?
网上购物与超市购物过程一样吗？
还能这样说：
Is shopping online the same as shopping in the supermarket?
Is shopping online simialr to that in the supermarket?
应用解析：
procedure还有别的意思：手续；手术；礼仪，礼节；行为，行动。
例如：Can you tell me your next procedure?
能告诉我下一步行动吗？
8. Let's check it out online!
让我们上网查看一下。
还能这样说：
Let's find it on the internet.
Lets search the internet and check it out.